Type-writer and computing machine.



. M. C. CRAWLEY. TYPE WRITER AND cor/mmm MACHINE.'

APPLICATIN FILED OCT. 2U, 19H.'

www@ my 30, im

4 SHEETSSHEET l.

III

M. C. CRAWLEY.

WPE wams Mw COMPUTING IMCHINE.

APPLICATION FILED OCT. 2E. I9ll.

hien' July 30, 1918,

4 SHEETS-SHEET 2.

M. Ci CHAWLEY.

*mi www AND COMPUTING rvmcmmil MPLICATIQN FILED 4GCT. 2.8, 191|.

4 SHEE'SH-SHEET 3,A

i C. CRAWLEY.

TYPE wams Mm comPuHN MACHINE.

APFLICAHON FILED OCT. 28.8911.`

Patent@ July 30, 193.8.

4 shears-sneer 4.

UNITED sTnTre reiTnnT MANSFEL) C. RWLEY, OF LOS ANGELES, CALIFORNIA, ASSGNQR 'TCF ADDOGRPH COMSANY, A CCRFORATXON OF CAILFORNIA.

' TYPENRITER AND COMPUTNG MACHINE.

Spegeatien of Letters Patent.

Patented July Si?,

Application exea-ettore ee, i911. serial no. 657,311.

at Los Angeles, in the county of Los Angeles, and State of California, have invented new and useful Improvements in Type- Writer and Computing Machines, et which the following is a specification.

This invention relates to a combination typewriter and computing machine.

It is the object of this invention to provide a combination typewriter and Comput ing machine which is adapted to he used separately either as a typewriter or as a computer, and which is so constructed that both the typewriter and computer functions may he performed at the same time, thus producing a machine by means of which itemized statements of various kinds may he prepared and columns of figures added by the computer to obtain a total. A further object is to provide means by which the type and digit bars are operated to obtain a uniform and positive impression and to be' returned to normal by motor power, thus pro-v ducing a machine which is capable of'heing operated at a very high speed.

Another important object of this inven tion, resulting from spring and power a ,tuated type and digit bars, is that the key-hars, the functions of which are merely release the type or digit bars, having slight resistance, may be depressed with ease. ther objects will become apparent in the following description of the invention.

The invention consists ci the parts, and the combination and construction of paris as will be hereinafter more fully described and claimed, having reference to the accompanying drawings, in Which- Figure l is a transverse section of the invention, partly in elevation.

2 is a detail of the type and digit-har operating mechanism. i

Fig. 3 is a. detail in perspective oi the' end portion or" the type and digit har actuating arm.

F igs. Ll and 5 are plan views of raclr attachn'iente which are applied `to the paper carriage when the computer is 'to he ein- 'loyed Fig. 6 is a section `on the line il-5U et Fig. 7.

Fig. 7 is a plan 'View on the line V-V o?? Fig. l, showing the computer selective mechanism. p

Fig. 8 is an enlarged section on the line l/V-VV of Fig. 7, showing the computer operating mechanism in elevation with parts broken away.

Fig. 9 is a detail section on the line XMI. of Fig. S.

Fig. l0 is an enlarged. section on the line Y-Y of Fig. 7 showing the computer lreversing mechanism in elevation.

Fig. 11 is an enlarged section Aon the line Z of ig. 7.

Fig. I2 is a detail in plan of the operative mechanism for returning the type bar actu ator to normal. y

Fig. 13 is a front elevation of the machine 'with parts broken away.

Fig. 14 is a detail and side the computing mechanism.

Fig. i5 is a front elevation or" the same. Fig. 16 is a detail in elevation of the traveling` pinion.` Y l Fig. 17 isaJ detail perspective view of the operating levers and. equaiizing springs employed in the computing mechanism.

Fig. 18, Sheet 2, is a detail side elevation o the type actuator restoring mechanism.

In the drawings, Ai represents a key bar of the typewriting mechanism, which is provided with the usual depressing vhuttoi'i A', and is fulcrumed at 2.

The inner end of the key bar n. is pivotally connected to a vertically disposed operating arm 3, the upper end oi which is guide ed in, and adapted to pass through, slot formed in a stationary segment e, mounted on the frame 5 of the machine. A spring 6 mounted on the operating arm 3, normally retains the latter in its lowermost position.

There are as many key oars A and operat ine' arms 3 provided, `as just described, as there are keys or buttons A on the typewriting portion of the machine. .Disposed above the upper end of the opern ating arm 3, aoove the segment e, 'is a type bar actuating arm 7, the lower end of which elevation of extends downward at 8 and is normally held in contact with the segment .4: by means of a spring 9. l

rhe upper end ot the arm 7 is pivoted to theshortamn of the type bar l0 in close prox.-

(lll

imity to the fulcrum point 11 of the latter. The lower end of the arm 7 is also provided with a hooked portion 12 which is adapd to he engaged oy a reciprocating segmental actuating bar 13, when the lower end 8 of the arm l is moved upward by operating the arm v3, as later described and as shown in Fig. 2.

The actuating bar 13 is carried hy means oi links 14 from outwardly extending brackets 15 mounted on a rigid portion of the frame 5. Astid vspring 16 normally bears against the back ot one or more of the links 14 adjacent the brackets 15 and tends to move and retain the actuating har 13 in its orwardmost position, as indicated in dotted lines in Fig, 2d

Means are provided for normally retaining the actuating har 13 in its rearward position in opposition to the tension of the spring 16, which means is adapted to he voperated .by the depression of a key A to release the actuating har 13 and permit its being carried forward hy the spring 16. The ahove-mentioned means are constructed as follows: Fivotally mounted on a bracket 17 on the actuating har 13 .is a link 18, which extends rearward of the har '13 and connects with a crank 19 loosely mounted on a shaft 20. The outer Iend of the crank 19 carries a pawl 21 which is adapted to he engaged with, and disengaged from., a ratchet 22 krigidly mounted on the shaft 19, The pawl 21 is -held out of contact with the ratchet 22 when the har 13 is in its rearwardmost position hy means of, a stationary cam 23 mounted on a hanger on the frame 5, on which calnthe outer end of the pawl 21 is designed to ride, as later described'.

When the pawl 21 is disengaged from the ratchet 22, the cra-nk 19 is free to move or heI held stationary, independent of the revoluble shaft 2O on which it is mounted and which shaft is adapted to he constantly rotated lthrough gears 211 and25, loy means of a motor 26.

It will be seen that, hy obstructing the crank 19 at a point 'corresponding` to the position it will assume when the actuating har 13, carrying the link 18, is in its rearwardmost position, the actuating har 13 willV befpre-vented 'trom being moved forward, and that hy relieving the crank 19 at this point the spring 1 5 will carry the har 13 forward with considerable velocitye rlhe mechanism for locking the crank 19 consists of a depending pawl or dog 27, pivoted at its upper end to the 'frame 5, the

crank engaging member 27 of which is'normally disposed in the path of travel of the outerend of the crank 19 i such manner `as to 4prevent.furthermovement of the latter when it reacheslthis point, as later de scribedf 'llhe dog 27 is normally retained in .its crank engaging position, hy meanso'l a remesa -spring actuated hell-crank lever-28, which /link 31, one end of which. is provided with a slot into which a pin on the dog 27 extends, and the other end oi which engages a curved releasing bar 33 which is located between the segment 'd and the actuator bar 13 in contact with the upper face of the downwardly extending portion 8 on each of the type-oar actuating-arms 7. The bar 33 is here shown as extending downward at each end and pivoted at 31 ata point against the key bars A, hut any other manner of mounting the bar 'oy which it can have a certain transverse reciprocal or oscillatory movement, may be employed if desired.

ln operating` the typewriter mechanism just described, a button Ar is depressed, thereby rocking the key-bar A on its pivotal niountings 2 so as to move the operating arm 3 upward through the guide slot in thc stationary segment l. rlhis brings the upper end ofthe :operating arm 3 into Contact with the downwardly inclined end 8 of thc arm 7, thus moving the latter upward on its pivotalniounting 7 so as to dispose the hook 12 in 'front of the reciprocating actuab ing-bar 13, as shown in lfig. 2. fis the in* clined portion 8 of the arm 7 moves upward, ,the bar is moved backward oy reason or' the inclined portion 8 bearing' against the bar ata point #15 from its center, thus acting as a wedge to move the bar 33 backward on its pivotal mountinos 3-1.

rllhe rearwardmovcment oit' the bar carries the slotted nlink 31 rearward therewith, so as to throw the projection 27 on the llower end ol the dog 27 out of engagement with the crank 19, which permits the latter to ro tate on the shaft and thus release thel harl. i

rlhe har 121 is then caused tomove forward luy means oit 'the tension ot' the springs 16 hearing against the links 14, the links 18 pulling upon the loose crank 19 to carry the pawl 21 over the cam surface 25 the cam 23 permitting the pawl 21 to travel free from engagement with the ratchet 22 while the bar 13 is moving in a forward direction.

The springs 161act on the link 14. to impel the actuating' bar 13 forward with considerable velocity, the forward movement of the bar 13 acting to impel the type bar 10 up-` ward against the platen roll through the arm. 7 which has heen previously disposed in front of the movable oar 13, as before described. A uniform impact of all the type in the machine on the platen roll is linsured' for the reason that one spring or set of springs 16 control the forward movement of the actuator-bar 13, which bar operates on Vall the type bars.

The moment the impression is made by the type bar 10, the spring 9 returns it and the arm 7 to the normal position shown in Fig. 1. In the meantime, the pawl 21 has been carried clear of the cam 23 by means of the link 18 and crank 19, which are carried forward by the actuating bar 13. The moment the pawl 2l is released from the cam 23 a spring 21,Vcn the pawl throwsit into engagement with the rotating ratchet wheel 22 on the shaft 20, so that as the ratchet revolves the crank 19 will be carried there with,.thus pulling upon the link 18 to return the bar 13 back to its normal position, in opposition to the spring 1G where it is retained by the dog 27 rengaging the crank 19.

The moment the crank 19 is engaged by the dog 27,'the heel of the pawl 22 strikes the cam 23 which action rocks the pawl 27 and releases it from engagement with the ratchet 22, in which released position it is retained by the cam 23 until the crank 19 is again released .from the dog 27 and is again moved forward by the springs 16, as before described.

The moment the bar 13 starts back to its rearward position it releases the hook l2 on the arm`7, thereby allowing the spring 9 to pull the arm 7 downward until the lower end ofthe inclined portion 8 comes in contact with the slotted segment 4, the lower end 8 0f the arm 7 movingrearward into contact with' the edge of the actuating arm 3 extending through the segment el, so as to move the latter rearward against the tension of the spring (5. as shown in dotted lines in Fig. 2, the Spring' 9 at tliesame time`rcstoring the type bar 10 to normal. As this occurs, the spring (i returns the arm and keybar A to normal, the upper end of the arm 3 passing beneath the lower end of the projection 8 in positieA for another operation, and the releasing b r 33 assumingl its former position over the inclined portion of the arm 7.

The platen roll 35 is mounted on a reciprocating carriage 36, which is adapted to travel back and forth on a track-way 37, as is lcommon in typewriter construction. As the operation of the' platen roller 35 and the carriage 36 forms no part of the present invention, the mechanism for operating the same is not here shown.

In the computing machine embodied in this invention, shown in Fig. 6, I employ a series of digit bars 50 corresponding to the type-bars 10 in the typewriting machine. The digit bars 50 are mounted on the frame 5 with the type bars 10 and are designed to be actuated by the reciprocal bar 13 from the motor 26 in the same manner as dee scribed `in relation to the type bars 1,0.

The usual series of numeral keys are provided on the key-board of the machine, indicated by the button B, Fig. 1, for the purpose of printing the numeral characters, and also for operating the computing device, the buttons B in this case beingten in number, and marked with the digits 0 to 9, inclusive. Each button B is mounted on a key bar B, which is pivoted at 2 and is provided with an operating arm 3 extending upward through a slot in the stationary segment 4 in contact with the inclined end S of the arm. 7 which is pivotally mounted on the under end of each digit bar 50, the members 3, 7 and 8 corresponding to the same members employed with the type bars 10.

When it is desired to operate the computing` machine, either in connection with or independent of the typewriting mechanism, it is necessary to attach a toothed rack such as shown in Figs. 4. and 5, to the platencarrying carriage .36, as shown in Fig. 1. This rack 52 is designed -to engage a pinion 53 mounted on the upper end of a shaft 54. disposed in the rear, and independent of the carriage 3G and mounted in suitable bearings on the frame 5.

The lower end of the shaft 54.- is provided with a. drum 55,`around which the ends of aable 56 are"wound in opposite directions, one portion of the cable 56 leaving the drum 55 passing around suitable direction pulleys 57`58 mounted on the frame of the machine and leading to one side of a slidable carriage 59 mounted Aon a guide shaft G0, as shown in Fig. l5. The other section of the cable 56 passes around direction pulleys, not shown, opposite the pulleys 57-58 and corresponde ing thereto, and connects with the other side of the carriage lt will be seen that the carriage 36 is -moved backward; and .forward longitudinally on. the track-way 37, to carry the rack 52 across the pinion in either direction, the pinion 53 will b e caused-to revolve and thereby wind one section of the cable 56 on the drum'55, while the other section of thel cable unwinds, thus causing the carriage 59 to be moved along the guide shaft GO simultaneous with the movement of the carriage tion to the diameter of the pinion 53 that the carriage 59 will rbe moved approximately The drum is so proportioned with relaat each depression of a but-A in retenes ringe 36 being accomplished in any desired manner, either by hand or mechanism not necessary to loe here shown.

A revolving shaft (il mounted on suitable bearings on the frame 5 is disposed beneath the guide shaft 6() in vertical alinement therewith.

A ten-toothed computer-actuating gear 62 is key-seated on an enlarged portion of the shaft 61, as shown in Figs. 14, and l5, so as to he slidable lengthwise thereon and turnable therewith. Downwardly projecting members on the carriage 59 extend around the shaft (il on each side oi: the (rear (i2 so that when the carriage 59 is moved from side to side on the guide-shaft 60 the gear-62 will he carried therewith.

Mounted on the shalt 6l is a gear 88, which is in constant mesh with a pair o" gears (34e-65, revolubly mounted on a rocking-lever 66 mounted upon the shaft 'Gl and adapted to be rocked thereon. 'lhe gear 65 is in constant mesh with a gear (57 also mounted on the rocking-lever Gli; the 1gears 64 and 87 being positioned on the lever 86 in such manner as to he alternately thrown in and out of engagement with a gear (i8 revoluhly mounted, as later described, on a stud S9 fixed on the traine 5, the purpose ot the gears (id-and G5-GG heing to provide means tor drivin-g the sha-ft 6l in either di rection from the gear 68, which rear Ais del signed to rotate in but one direction.

pendent thereof. The sleeve 77 y The mechanism for rocking the lever (itl consists oi' a link 70 connected to the lower end of the lever and to a bell-crank lever l mounted on the frame 5, which hell-crank lever 7l connects with a second hell-crank lever 7l adapted to he actuated hy one oi" the key-hars 7l.

The gear 64 is normally retained in mesh with the `rgear 68 hy means of a spring 72 which exerts an upward pull on the outer end ot the key-har A and when it is desired to throw the gear G-l out of engagen'lent with the gear 68, and to throw the gear G7 into engagement therewith, the button 78 on the key-har 71 is depressed and retained in its lower position, which action rocks the lower end of the lever 6G inwardly and thus performs the required action. 1

Formed on the :tace or the gear 88 is a ratchet 74 which is adapted to be engaged by a spring pressed paw 75 n'iounted onian arm 76 formed ou the outer end of a sleeve 77. 'lhc sleeve is supported and rcvoluhle upon the stud (il), and the gear 68 is rcvolubly mounted thereon so as to rotate indeis adapted to he rotated oy means of a gear 78' which is rigidly mounted on the sleeve and is in constant mesh with a reciprocal toothed rack 7 9 mounted and guided in suitable hearings on the `frame 5, which rack is adapted to he moved lengthwise in one directionjin strokes of various lengths on the forward movement of the actuating har 18, as will presently he tormined distance. The rack 79 is connected to the lower end ol' a lever 8O through a link 81, and the lever 80, -fulcrumed at 82, is connected to the actuating har 18 oy means of a connecting rod '83. rllhe rod 88 is, slotted at Sel through which slot a pin mounted on a bracket 86 carried loy the bar i8 extends.

A spring 87 exerts a pull upon the lever 8() in such direction as to normally retain the inner end of the slot 8l in contact with the pin 85 on the har 13, and is so arranged that when the latter moves forward, the rod 88 will be moved forward therewith hy the action of the spring 87 rocking the lever 8O on its bearings 82; the slot 85 permitting a continued forward movement ot the actuating` har 13 after the rod 88 has reached the limit of its forward movement, or when the rod 88 is held stationary, as later described. The spring 87 thus acts to move the rack 7 9 in a backward direction, which rotates the gear 78, sleeve 77 and arm 7 6 to cause-the pawl 75 to ride over the ratchet 74.

rlhe rack 79 is normally retained in its forwardmost position in opposition to the spring S7 by means olf a rocking,l arm 88 pivoted at 89, the outer end of which arm ci@ tends in the path ot' a laterally disposed projection or pin 90, formed on a downwardly extending member 91 on the rear end of the toothed rack 79, The arm 88 is normally retained in the path of the projection on the ack 7 9 by moans of a spring 92 which exerts an upward tension on 'the arm 88.

The arm 88 is designed to he depressed so as to move it from in iront of the projection 9() on the rack 7 9 and thereby admit of the latter being moved backward hy the action of the spring- 87. 'lhis is accomplisl'led by means ot' the operation of any one ot a series of selectonbars 93, which selector-bars' are pivotally mounted on a rod 94, as particularl Y shown in lifs, 6 and 7. rllhe hars E) 98 are arranged side by side with their outer ends extending over a horizontal men'iher carried hy the rocking arm 88, and each bar has its inner end normally resting upon a hey-bar B', of the numerical series, as shown in Fig. G, the upward pressure of the arm 88 retaining the hars 93 in this position. rlhc selector-liars 93 aredesigncd to he operated separately and are provided for the double purpose of releasing the rack 7S) and at the same time limit the rearward movement of the latter when it is actuated hy the spring 87. The operation oft a selector-har 93 is accomplished loy depressing a hutten B which rocks the inner end of the key-har B corresponding thereto, in an upward direction, which in turn rocks the4 selector-bar 93 on the rod 94, so as to cause its outer end to move in a downward direction.

The outer end of the selector-bar 93 dcpresses the rocking arm 88 `so as to move it from in front of the projection 90 on Vthe rack 79 to allow the spring 87. to move the i. latter backward. The actuator 13 is caused The rearward movement of the rack 79v by.

the spring 87 is arrested by means of the outer end of the depressed selector-bar 93 extending into the path of travel of the projection 90 on the rack 79; the projection 90 passing below the outerv ends of the nnactuated selector-bars 93. The rack 79 being .moved backward, the extent of the movement governed by the selector-bar 93 causes the pawl to engage with the ratchet 74 in such manner that when the actuator 13 returns on its backward stroke, which rocks the lever to restore the rack 7 9 to its nor-- mai position, the pawl 75 will operate tol Vrotate the gear 68 which vin turn will rotate the shaft 61 through'either of the gears 6a or (57, as before described. The moment the projectionon the 'rack 79 reaches its norv mal position the spring 92 restores the arm S9 1n front thereof and at the same time re-- turns the selector-bar 93 to its normal position.

Means aife'f provided for preventing theY continued rotation ot the shaft 61'aftcr the toothed drack 79 has-come to 'av stop, which means is 'here Shown as consisting cfa pavvl 96 moi-tilted on the. trame 5and which is thrm'vn'fv into engagement with a square toothed ,r atchet 97 on the shaft 61 by means4 of' projection 951,011 the rack 79 which. engages the pawl 96 when the rack 7 9 is in its forwardniost position in such manner as to rock thepawl, Awhich is in the form of a lever, ami?- throw it into engagement with the ratchet 97, as; shown in Fig. 8.

ldf'ounted on standards 100 is a shaft 101, which is disposed parallel to. and a short distance below and in front of the' shaft 61. Loosely mountedon the shaft 101 is a series of spacedeomputing disks 102, the peripheries of which are notched to form teeth which are designcdpto mesh with the teeth of' the gear 62, the 'teeth on each disk 102 corresponding in numoer to the teeth on the gear 62. The outer face otthe teeth on each disk 102 provided with reading or indicating numbers, ranging consecutively Yfrom 0'to 9., inclusive, and the disks 102 are se arranged with relation 'to each other that the numbered teeth, one on each disk, are in alinement with the teeth of the adjacent disk.

The alinement ot the teeth of the disks 102 is obtained by means of a series of rollers 103, on spring-actuated. arms 104, swivelly mounted on a slizft 10i supported by the standards 100, a roller 103 being provided for eachdisk 192 and so disposed as to normally engage a notch on its respective disk, as shown in Fig. 14.

The notches and teeth on the disks 102 being alined, it will be seen that the gear 62 can be moved successively from left to lright into engagement with any one of the computing disks 102', or it can be moved from right to left with the engaging tooth of the gear 62 passing lfreely through thealined notches in the disks 102. y There are as many of these disk's`102 as there are denominations or placesto be employed, andthe number mayv be' as extensive as desired. In this case, six places' are shown, whichl are suticient for ordinary purposes, there being one disk to indicate units, one tortens, another for hundreds, and so on up to hundreds of thousands, the unit disk being arranged at the extreme right, as shown in Fig. 15, and the tens, hundreds, thousands, etc., disposed in consecutive order to the left thereof in the' usual mathematical arrangement. These disks 102 are for the purpose of indicatin the arithmetical results of additionorsu traction as obtained in the operation ot' the computing portion of this invention, Which operation will now be described.

A rack 52 being mounted on the platencarrying carriage 36, in a position on the carriage corresponding to the position in lwhich the printed numerals are to be locatedggn the paper, the-carriage 36, is moved into Jgirosition where the'first tooth ot' the rack 52 will engage the" pinion 53, by means of space-key, or by hand, in the usual manner.' f

Assuming that it is desired to Write a number of six places, such for instance, as 123,456,the button B representing the number 1 is first depressed, vThe key, or bar B corresponding thereto is'thereby rocked on its pivotal bearing 2 so as to raise its inner end to move the operating arm 3 which a'ctuatesfthe' arm 7 and the digit bar 50 to imprint'the numera 1 0n the platen in the Sixth position. -The' digit bar 50 is operated by the operatingA arm 3 in the same manner as the type r 10, as before described in relation 'outer end into the path 'if the projection to the type-Writing- 'f second lisk l0@ 90 on the rack 79, before described. rlhis is done an instant `prior to the forward movement of the actuating bnr'l which now takes place.

The forti/ard movement of the ruoli' 79 now occurs on the return of the loer 'i3 which is occasioned by the motor 26, and causes the one tooth in the rnc-,ir 79 to operate the geni' 78 the length of one tooth, which, in turn, operates the gear 68 the suine distance, so es to rotate the shaft 61 and cause the geur 62 to turn the recording or computing disk 102 one notch, or from the 0 to l position, the pinion G2 lneviouslf,7 coing moved into engagement with the first recording disk 10Q by the movement of 'the carriage 36. rthe forward movement of the ruck Z9 also acts to throw the locking puwl 96 into engagement with the ratchet 9T to insure the shaft 6lr and 4geiir 132 coming to stop in the proper position.

The return of the bei* 13, by Ineens of the .motor 26 and its connecting mechanism, ns before described, carries the lever 8U reen Ward in opposition te the spring 8'? and returns the rack Z9 to normal.

ldhen the computing mechanism is again 'in position for another operand-on, and the gear 652 moved into enge-gement with the oy the shifting; of the cnrringe S6, tige key .marked with the numb-er El, is depressed so es to actus-te the second selector-bor 93 in the series, which will per mit the rack 79 to move beck sutiiciently for to rotate the gears 78-v58ei-63 und G2 o distance of two teeth so ns to rotate die second recording disk 102 two notches, or into the Z-position, disposing the numeral E2 in line With the exposed numernl on the previously operated disk.

ln this manner the operator proceeds, unw

til the desired number, in this case l2 ,4:56 will be imprinted' on n sheet on 'the pinten 35 and the corresponding numbers exposed or indicated on the disks 592 through n rending slot in the casing: 5, not shown. l iis being accomplished, the pinten 35 is turnec` into position to receive the next line o numbers which are to be added to the ninn hers just Written.

The geur (i2 is then sliitte l. into engage ment with thedisk 102, ivhici'i exposes `'the number or place to which the next number.

is to 1oc added, und the button B cnrryinn' that number is depressed to rotate the lected disk :is man); numerical points as contained in the selected number. For 'ilus- 'rution, assume it is desired to odd the nnmerul 3 to the numerati 6, previouslyY 'printed in thennits column on the platen und eX- posed on the unit disk ll oif 'the'computer thc can-ringe 3G being shifted in to position to cause' the digit bur to nn imprint on the pinten in the units column below the previously printed 6, the gear vsenting the sum of (S plus 3.

n downward direction.

i ,ef/secs becomes positioned to operate the unit disk 102. TheB-button B being depressed, the numeral 3 is printed on the platen und the .indicating disk lOQ is caused to move three points so es to expose the numeral 9 where the 6 fori'ncrly stood, the numeral 9 reprelt is obvious that the operation just described would loe the some on any one of the disks 102, and that each 'disk will be moved in accordance with the points denoted by the operating button B, ran Wing from one to ten, a number being exposed otter each operation of a disl ,102 corresponding to the sum of the number on the button depressed `plus the number pre viously exposed, e carrying mechanism about to be described being provided for the purpose of carrying the tens from one indicating disk to the next.

ln. this manner, tne operation of adding' e column of ignres muy be carried on indefinitely, coing limited in nrithmeticol pinces only bj the number of recording disks 102 employed. ln this euse, sin disks nre shown, *from 'which it will be readily seen that the mechanism. here disclosed is limited to u capacity et 999,9S.

The operation just described is not conlined to addition, the sume mechanism losing employed, however, for subtraction, which,

being; reverse to addition, necessitates the reverse rotation of the nccumnlstion or rccording disks 10Q. rthis is accomplished 'by depressing the hey 73 Yso ns to operate the rocking; lever 6G and throw the gear 67 into engagement witntliegeer 68, which, when nio rotated will nctuete the dfshnft 6l and geni* 6:2, :Ls loeore described, only in n reverse direction,

lfne cai-rr fino' mechanism heitere nien honed is constructed nud operated as follows: i

Pivotolly mounted on 'the shaft 1053 snpported on the stendzirds lil() is n series of "nell-crunk levers lhone oli these levers loe-- ing; disposed beneath encli indicating disk 102 ence tino the unit diskn Each lever 9 PJ .L06 carries n trip lever 107, winch is pivoted 108 neer the outer end or the long i." y vf.h' in oi tne oeitciank level c. Jac trip .olly extends in n vertical diY tn its upper end projecting Tinto mounted on the side of tra vel c 'the pin 08 fece or the disll; nt the, shown in fi. duplex plate spring; 109 u hell-crank 1.08 nets to normally retnin the trip lever 'lOl' in its vertical position, a pin' lll) on the lever l0? extending between 'che two. leaves ot the spring 109 against which the lower leaf ot' the springI bears in un upward direction and the. upper leef hears .in A pin llLon the tell-creol; 106 is disposed between. the upper mounted .on 'the richt thereof, is

between the disks l0@ in the petti 1 ,masas and lower leaves of thespring 109 to equalize the tension of the spring leavesso as to centralize the pin 110 to maintain the lever 107 in its vertical position.

An ofset or shoulder 112 is formed on the upper end of each trip lever 107 at a point just out of contact with the under side of hundreds disks will be in position to actuate the disk 102 thereabove, the purpose of which will be made apparent hereinafter. A hook 113 on the lower end ofeach trip lever 107 engages a-keeper 114 when the bellcrank 106 is'moved to its lowermost position with the lever 107 in its vertical position, the. hook 113 acting to retain the long arm of the bell-crank 106 in its lowerlnost position in opposition to a spring 115 disposed between the lower end of the short arm ofthe lever and a lixed shaft 116 on the sandard 100,

The function of the spring 115 is to rock y Vthe bell-crank lever 106 to move the long arm thereof in an upward direction when the hook 113 on the lever 4107 is disengaged from the keeper 114. l

The pins 108 on the disks 102 are so disposedas to extend alongside the lever 107 on the right-hand side thereof, as shown in Fig. 14, so that when the disks 102 are rotated counter-clockwise from the cipher position to the fl-position in performing the process 0f addition', as before described, the disk will rhtate without operating the lever 107, that is, the disk 102 may be movedto expose the consecutive ordinals 0 to 9, 1n-` clusive, without affecting.. the lever 107.

vWhen a disk 102 is rotated counter-'clockwise from the 0 to the S-position, the pin 108 thereon will be disposed adjacent the lefthand side of the lever 107, as indicated 1n dotted lines in Fig. v1e, so that a continued rotation of the disk will cause the pin to engage the upper end of the corresponding lever 107 to rock it on its pivot 108 1n opposition to the spring 109 so as to disengag'e the hook 113 from the keeper 114. This permits the spring 115 to exert a pull upon the short arm of the bell-crank lever 106 to move the lever 107 upwardly. The shoulder 112 on the lever 107 being previously en-.

gaged with a tooth on the adjacent disk 102 to one side of the center of the dlsk mounting, as indicated in dotted lines 107', Fig. 1li, the upward movement of the lever `107 will cause the disk to-rotate one position, which is sufficiently far to cause the shoulder 112 to slide over the edge of the dlsk tooth. This permits the bell-crank lever 106 to continue its u Ward movement until an upwardly exten ing member 117 on the.

outer end of the long arm of the bell-crank will come into engagement with a tooth on the disk 102 to lock it against further rotation, the lever 107 and thebell-crank 106 then assumingv the thirdV position, as shown in dotted lines 107, EFig, 14.

In this manner, when; any disk 102 is moved to the 10-position, the pin thereon will automatically release a lever 107 allowing the latter to move the adjacentdisk one position. For example, assume the number 'v 099, as indicated in the maehine,'in which instance the pin 108 on the units, tens, and

a lever 107. If the unit disk then be moved one notch the pin thereon will operate 121,75. lever 107 to rotate the tens disk one notch, which, in turn will actuate a lever 107 to rotate the hundreds disk one notchV so that I the number indicated will then read 1000.

It is obvious that. after writing a number on this machine, it will be necessary to restore the carrying mechanism j ust described, to normal before writing another line of numbers. This is accomplished by means of a restoring lever 11S-which extends trans- 855 versely above the long varm of the bellcrank levers 106 and is supported on the outer ends of arms rigidly mounted on aj revoluhle shaft 119 on the standards. By .rotating the shaft 119 to move the restoring 90 bar 118 downward, any vnumber of the hell` crank levers which may be in their upper-vv most position may be depressed so as to cause the hook 113 on the lower ends of the lever 107 thereon to be re'e'ngaged by .a 95 keeper 114. v

In performing the operation of subtrac tion, the niinuend is printed on the sheet on y -ence in subtraction operate in an oppositevlo manner to that of addition, thepins 108'- then actuating the carrying levers 1074 from the right-handside. y j The indicating disks 102 are returned to normal, that is, to the cipher reading posi- 11o tion, by rotatingl the shaft 101 in any suit-v able manner. T he frictional contact of the shaft 101 with the disks thereonis suH- cient to cause the latter to rotate therewith.

The tension 'of the springs 109 is suf- 115 cient to allow the upper vend of the lever 107 to act as astop to limit the revolution of a disk 102 when the pin 108 comes in contact therewith. l A

A stop pin 120 onv the. standard 100 is 120 disposed in line with the pin 108 on the left hand disk 102 toins'ureits'alinement on thereturn to normal. Means are provided for preventing the operation of the computing mechanism when it is desired to operate the digit bars with-- out actuating thecomputerrdisks 102 and the mechanism'relating thereto. This means-t eonsistsof alever 125 pivotally mounted on the trarne 5 and connectedto a key-bar.. A 13@ as shown in 8 anti aapieci io be opmated by the depression of a button on the shoulder 127# :formed on the casing 5, as 1n- (heated in cloted lines in Fig. 9. A spring 128 restores the key-bar A to norme-l when the laiieiis disengaged from the shoulder' i257 and neiniely holds the-levei1 125 out of engagement with 1the shoulciei 126 on che rack 79, shown in Fig. 8.

lveans are provided for insuring the shaft 6l comino' "no a stop in the popeif posi- 'cionswliich means are shown in Fig. l1, and; consists of a /eii-ootlaeci raichet i529 cigifily inoi'inieci on the shaft Si, the. teeth of which aie engegeei 'bye i'olle' 31.30 on, e ievei' 131, which i'oiiei caused io bca'f againsf: ehe ratchet 329 by ineens of a l'ieiicai4 spying 132 acting on the ievei' 131. The tenu sion oit' che spring 132 is sniicient "co canse che i'oiiei 130 io enter the vnotches in the iaichet 129, in such inennei' shaft el to stop when iis Qiiiving povvei` is thrown ont, that point.

Fiom the oiegoing descripi'ion of inv/invention itwiii e seen that i have produced a combined typevviiteif and cinnputing inacaine in which Amechanical power is enpioyed in operating 4he printing and coin.- pntei mechanisms; motive power being useoiV so restore he Wpc-bai' opei'asing mechanism to noifinsii in opposition io 'tensione/l driving; means, and also in restoringN the computer aetilaizing mechanism izo noinsai in opposition 'izo a spring which is ensioned ico/operaie the compii'ei, The typewi'iei and coinputer being; spi-ing actuated obviates the ne{ie/ssii)T of heavy impacts on the keys of ihe machine, the operaio? nxei'eiy deiiii'essing a hey to Frelease ccif'aain engaging inenibei's 13o aaimit of niooi and various tcnsioneii cleniens peiiioi'reine; *fixe Work requiring poweiz Thisachn' ci the machine beingy oiriei'a'eii ae high speeci with very litrie effort', oi* exertion on ihe pait of ihe opeiaioi; speed bein# fui-ibex faciiifaccl by reason of `he fact thas ii', is noi necessary so await he i'eiiiin off io its noiinai position befoi'e dein ing anoheihey. Any ninn- (is may be hohl (lown at the sani@ izime; ib being); only necessary lo leross-Hmm saecessiveiy. y'lfhis is permitted. 5,/ reason of i'iie ype-bai's being i'elui'ncii zo normali by ghe spiking 5) as soon as i'he to canse che actiiacm-bai i3 is ieiiaciefl, irrespective of the position oi the opeiacinir anni 3.

Having" illus described my i ventioi'i, 'what i claim ami desire to secure by Aaeiei's Pai;- ent is 1. The combination in a typewriing ma chine having a series of c vpe and digit bars, an actuating bai' foi' opciaiing the ype and digit bars, a rotary motor, means by which thev motor will move the acuaing bai' in a baclm'ax'd direction, spring,- means i'oi moving 'he actuating bar in the {oi-W: i'd .cliccotion, and key bers foi' causing she' actuating bar to ope 'zie che type and digi' hais, o' '7a series of toothed coinpuiing' disks, and means for rotating said disks controiie by the foward, Amovement of said actuating bai'. 2. in a tyi evviiei', a computing mecha nism consisi'iing in the combination with the. v fpriniiing mechanism of a typewiitei of a povvei bai wiilh means for opevaiine 'che printing mechanism by the power bai, a series of count Wheels denoininaionaily an ranged in trein, a key conti'olleci selective mechanism for posiiioning; s, count wheei accoiding o the numeral represented by ivhe key struck., and means opeiatei by the power bei' foi' i'estoiing the seiec'zivc mechanism io initial position afee each depression of a key.

lin a typewrier, che combination with fne pi'ining mechanism, a powei' bai' for operating the printing mechanism, a bank of digit key bars, a series o cenni; wheels denominationallvzii-ranged in iain, a shift abie aciiaibng geni ifofc said ivheeis, ineens inchiding a-single rack anci pinion :for iotilting; the gear a, fraction of a revoinion coii'esponiiing 'o che key bai flepiessefi, spying; ineens'zenciing;- to move he :sack in one diecion, i cans coni-coiled by key bais to gevein the movement in that ziiiection of 'the fsck, and ineens contiollefi by the power bei: 'o move the sack in ihe oppoM sie direction.

'in typewriter, the combinacion o e series of denominaional count Whecis aiiiingeci in wein, shii'tabie inasteil gear engageable with said wheeis, inechai'iisin including); a singie rack and `pinion for.' opeiabing;4 the gear, a shaft upon which the gem? is gplincd having' a reve eine" device., a pen/ei? bai' connected wiih che rack io inove the vlatter in one direction, a. bank of digit key bai's, and means coniroiiec. by' the .key oars "ce move the rack in Ythe cpposiM iiiection disiaiice coi'iesponding," Sgo he fhfzioininailion oi the depressed key.

in a typewritinp' inacl'iine, he combi naiion with a bank ci' digit bains and a bank of liej/ bars 'foi' selec-*sing saine.y of an acinato bai 'for obei'aingg the selec-.ioni digit bai, a, series of toothed computer die-lis inhibebie on a shaf, a pinion keyed. on a i'ef'ehibie shaft.,

neraeas and means for throwing said pinion into successive engagement with the computer disks.

6. In a typewriter, the combination of a series of denominational count wheels arranged in train, mechanism includinga rack and pinion for operating the count wheels, ay

power bar connected with the rack to move the latter in one direction, a vbank of digit key bars, and means controlled by the key bars to move the rack in the opposite direction a distance corresponding to the digital valve ot' the depressed key, said last-named Y.

one direction, spring means tending to move the rack in the opposite direction, a detcnt normally acting on the'rack in opposition to the spring, and selector mechanism comprising a set of levers bearing'at one endupon said detent each operable by the individual key bars to depress the detent and forming a stop to limit the movement of the rack and permit it to travel a distance corresponding to the digital-valve of thel depressed key bar.-

8. In a typewriting machine, the combination of a bank of digit bars, a bank of key bars for selecting the digit bars, a spring impelled actuator bar for operating the selected digit bar, a series of computer disks corresponding in number to the digit bars, means by which the operation of a digit bar will rotate a computer disk a fraction of a revolution, means for governing the direction of rotation of the computer disk, means by which the actuator bar may op crate the 'digit bai' without operating the computer disks, and means operable by the key bars for restoring the computer disks to the initial zero position.

9. ln a computing mechanism, the com bination of a denomlnational series of count wheels rotatable in opposite directionsffoithe processes of subtragction andv multiplication, a spring actuated lever for each count wheel except the one of highest denomination, a spring actuated and balanced dog on each lever, means by which a cfmt wheel on the completion of a full revolution in either direction will operate a respective dog to cause said dog to move a succeeding count wheel one step, and a lock on the lever cai'- rying said dog engaging and temporarily el limiting the further movement of the last named count wheel beyond its one step.

l0. ln a computing mechanism, the combination o a pair of count wheels arranged 4side by side each turnable in opposite di-v rections, a spring pressed bell crank lever, a balanced dog on the lever movable in either. direction, a stationary detent engage` able by the dog for holding the latter and the lever against the tension ot' the actuating spring for the lever, and means whereby one count wheel trips sai'd dog to release it for coupling with the other count wheel to move it with impulse by the lever.

11. ln a computing mechanism, the combination of a pair of count wheels arranged side by side and turnable in either direction,

' a spring pressed bell crank lever, a yieldably mounted dog on the lever, a stationary de- -tent engageable by the dog fn' holding the latter andthe lever againstA the tension of the actuating spring for the lever, the dog being releasable from the detent by move ment in opposite directions, means whereby one count wheel trips saiddog to release it to engage the other count "wheel and turn it one 'step by impulse of the lever, the lever engaging the count wheel moved by the dog to limit the further movement of said count wheel.- Y

12. ln a typewriting and computing machine, aj-computing mechanism, a spring for automatically actuating the mechanism, type-digital bars with return springs, an actuator for and common to all said bars connected to said mechanism, a spring for autel ma'tically actuating the actuator, land a motor .operatively connected to said actuator for setting the same against its spring, and providing power to tension the computing mechanism spring.

13. ln a typewriting and computing machine,` a computing mechanism, a spring for automatically actuating the mechanism, type-digital bars with return springs, an

actuator for and common to all said bars connected to said mechanism, a spring for automatically actuating the actuator, a motor operatively connected tov said actuator' for setting the same against its spring and providing power to tension the computing meehanisi'n spring, coupling means interposed between said actuator and type bars for transmitting motioni'rom the ae 'tuator to selected type bar, and keys for operating1 the couplers and determining the strokey of the computing mechanism.

lli. rlfhe combination in a typewriting machine liaving type and digit bars, auto,n matic actuator common to all said bars,

means for normally restraining the actuaton' .manually operable key-levers operative uponsaid means :tor releasing said means 'to permit the automatic functioning of seid ectuetoi, e motor for ietlacting the actuator, of a set o' eoiiiputing disks, ineens joi rotating seid disk controlled by Seid actuator? iiiciudiiig a` device for providing for the fuli stipke of the actuator but for iimiting the 'rotation of said disks.

'5. in e typevvriting and computingl ma chine, the combination oi" e Series of digit here, e bank of corresponding computing disks, af continuously operating powei.1 sh e Tecipi'oceting mok hei/ing e connection with said disks for rotating' the semeoom mon egtuetoifoonnoctimo with Suiti power ,zweeg shaft to i'eceive a fixed ciegree of movement for operating said digit bars and reciprocating recit, and :t Ybank o digit key levers controliiiig the connections between the actuator end power device and deter mining the degree of iiiovemei'it of seid mok.

lln testimony whereof i have hereunto Set my hand in. the presence of two eubsci'ibing` Witnesses.

MANSFHQLD C. CRAWLEY.

Vifitzieeses J. MEYER? Smwemii. 

